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MSD 6A Digital Ignition Module (79-95 All)

Market Price $263.23 You Save 12% ($30.28)
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  • Item 14221

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Ship to: Ashburn - 20149
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    Features & Details

    • A Stronger Spark Equals More Power
    • Higher Output with 530 Primary Volts and 135mJ of Spark Energy
    • More Efficient, Uses Less Current to Produce More Power
    • New Lower Profile Housing
    • Built-In LED for System Checks
    • Fits All Mustangs with a 12-15 Volt Electrical System
    Capacitive Discharge. The MSD 6A Digital Ignition features a capacitor which is quickly charged (within one millisecond) to 520-535 volts and stores it until the ignition is triggered. With the Capacitive Discharge design, the voltage sent to the coil is always at full power even at high rpms unlike conventional stock inductive ignitions which requires the coil to store and step up the voltage in between each firing which can result in a loss of power or top end miss.

    More Efficient. Inside the Digital 6A you'll find a high speed RISC micro-controller that constantly monitors and controls every firing. The circuitry has been updated with highly efficient components that help the ignition produce more power while drawing less current. The new Digital 6A delivers well over 530 volts to the coil with up to 135mJ of spark energy for every firing. Increased output combined with MSD's proven multiple spark series is a winning combination.

    Multiple Sparks. The MSD 6A produces full power multiple sparks for each firing of a plug. The number of multiple sparks decrease as your rpm's increase, however the spark series always lasts for 20° of crankshaft rotation. For rpm's above 3,000 there is simply not enough "time" to fire the spark plug multiple times, so there is only one powerful spark.

    Application. The MSD 6A Digital Ignition Module will work on all Mustangs that are equipped with a 12-15 volt electrical system, including 4, 6 or 8-cylinder engines.

    Operating Specifications
    • Spark Energy: 135-145 mJ per spark
    • Primary Voltage: 520-540 Volts
    • Secondary Voltage: 45,000 Volts
    • Spark Series Duration: 20 degree Crankshaft Rotation
    • RPM Range: 15,000 RPM with 14.4 Volts
    • Voltage Required: 12-15 Volts, 7 volt start
    • Current Draw: 0.7 Amp per 1,000 RPM
    • Weight/Size: 1.7 lbs. 8"L x 4"W x 1.825"H

    Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 Details

    MPN# 6201

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Digital Ignition Module
    • (2) Wiring Harnesses
    Installation Info
    Tech Specs
    Will it fit my Mustang?
    • Cobra - 93, 94, 95
    • Cobra R - 93, 95
    • GT - 87, 88, 89, 90, 91, 92, 93, 94, 95
    • LX - 87, 88, 89, 90, 91, 92, 93
    • Other - 79, 80, 81, 82, 83, 84, 85, 86
    • V6 - 94, 95

    Fits Mustangs equipped with a 12-15 volt electrical system

      Customer Photos (6) Submit Your Photo

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        Questions & Answers (5)

        5 Top Rated Questions

        Can you set a rev limiter with this box ?

        • No you cannot.

        Helpful (0)

        I have been told, the MSD Ignition Boxes, will not work with the Factory Tachometer ....

        • The 6A and 6AL will work with most Mustang tachs, however some years will not properly work without an adapter. Without knowing the year of your Mustang, we would be unable to assist.

        Helpful (0)

        im changing heads, cam and intake manifold will this MSD ignition get rid of the stock rev limiter cause it taps out at 5400 rpm.?

        • The MSD 6A Digital Ignition Module will not disable the rev limiter.

        Helpful (0)

        Will this work with a stock distributor? Would it be ok to use this with a stock distributor? I have a foxbody with an MSD ignition coil, stock distributor, and Ford Racing 9mm spark plug wires if it makes any difference.

        • Hi, This MSD 6A Digital Ignition Module will work great with your stock style distributor and the other mods you listed.

        Helpful (0)

        does it work with ignition controll moduale I have read all instructions and all diagrams have single coil not coil pack not sure how would hook up to ignotio control modual

        • What you want to do is buy the MSD Box To Factory Ignition Harness (86-95 5.0L) item # 14235, it makes hooking up these boxes so easy anybody that can read can hook it up. I have the MSD 6AL on my 95 Cobra and used the item number 14235 and was done in about 30 min's or less and it works great.

        Helpful (0)
        Post Your Question

          Customer Reviews (15) Write a Review

          Overall Rating 4.3

          out of 5 stars

          Installation Time:Less than 1 Hour

          • Performance Gain 3.866667 3.9
          • Fit 4.8 4.8

          • 4/5

            Installation Time: Less than 1 Hour

            September 24, 2018


            Fast shipping And easy to install ! Runs amazing


            Year: 1990 Submodel: GT

            Helpful (3)

          • 1/5

            Installation Time: Less than 1 Hour

            July 20, 2018

            Not worth it

            I installed this on my 94 f250 and also had one on my 92 foxbody. both never lasted more then a few months before they caused a miss or just shutdown altogether.


            Year: 1992 Submodel: LX

            Helpful (6)

          • 3/5

            Installation Time: Afternoon

            June 02, 2017

            time to install

            had to make a place for it made a bracket on rad. took some time but looks good i have not had a chance to see what if any change was made to my car.


            Year: 1991 Submodel: LX

            Helpful (5)

          • 5/5

            January 11, 2017


            Has the same footprint as the original but not as tall. This makes the unit compact for installation under my BBK cold air kit.


            Year: 1991 Submodel: LX

            Helpful (5)

          • 4/5

            Installation Time: Less than 1 Hour

            October 04, 2015

            looks good

            Works good noticed a difference and if u don't have one u should get one lol


            Year: 1994 Submodel: GT alberta

            Helpful (7)

          • 5/5

            Installation Time: Less than 1 Hour

            August 27, 2015

            Great product

            very easy install. Harness was a direct plug in no issues.


            Year: 1993 Submodel: Cobra Killen, AL

            Helpful (6)

          • 5/5

            Installation Time: Afternoon

            May 19, 2014

            Great Product

            I installed the MSD 6A on my 94 Mustang Cobra using the MSD-8874 wiring Harness and it made it a snap to hook up. It took longer to relocate the battery in the truck than to mount and hook up the MSD 6A box.


            Year: 1994 Submodel: Cobra Blandon, PA, USA

            Helpful (5)

          • 5/5

            May 13, 2014

            MSD Ignition

            Are you looking for top class products for your car’s performance? Edelbrock super chargers are the perfect destination for you providing edelbrock products, charger and also sells top most brand products.


            Year: 2014 Submodel: V6

            Helpful (7)

          • 5/5

            Installation Time: Less than 1 Hour

            January 24, 2014

            Awesome product!

            My brother in law and I bolted and wired this to my 94 GT in less than an hour. It not only improved overall performance and reaction time, but completed the under the hood look... I have red plug wires, msd coil, msd cap and rotor as well, so just looks complete now! Great buy!


            Year: 1994 Submodel: GT Austin, TX, USA

            Helpful (9)

          • 3/5

            Installation Time: Afternoon

            January 20, 2014

            It's ok

            Dident do to much for my mustang verry little gain But something is better than nothing


            Year: 1991 Submodel: GT

            Helpful (8)

          • 5/5

            Installation Time: Afternoon

            September 20, 2013

            Good addition to terrible oem ignition

            I can't imagine not adding this to my vehicle, it has made the terrible oem ignition bearable.


            Year: 1995 Submodel: GT

            Helpful (6)

          • 5/5

            Installation Time: Less than 1 Hour

            July 24, 2013

            great product! must buy!!!

            first off let me start off by saying I have a 93 mustang GT all original...and this MSD box has made my car run like butter! it runs soooooo smooth its crazy. I have A LOT less fumes, and it gives me a bit more HP. what else could someone ask for?? and the price was great..went to a few other websites and they wanted twice the price, if not more. it was so easy to install I had my 9 year old helping me!! I do 95 percent of my shopping for all my projects from its the #1 website I recommend to all my friends and family!!


            Year: 1993 Submodel: GT Millville, NJ, USA

            Helpful (7)

          • 5/5

            Installation Time: Less than 1 Hour

            October 18, 2012

            I was surprised

            I was shocked with this part because it REALLY woke up my cobra. Rpms shoot straight up and I start spinning instantly. Deff recommend


            Year: 1995 Submodel: Cobra Stratford, CT, USA

            Helpful (7)

          • 5/5

            Installation Time: Less than 1 Hour

            July 29, 2012

            Great product

            Great product, its really worth every penny. Lower MPG on highway


            Year: 1995 Submodel: GT Canada

            Helpful (5)

          • 5/5

            Installation Time: Less than 1 Hour

            September 30, 2011

            msd box

            love this product nice boost of energy to my 351w. it has done everything it says.


            Year: 1991 Submodel: GT

            Helpful (11)

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